Wireless charging method and apparatus thereof

Abstract

An electronic device is provided. The electronic device includes a housing, a wireless charging coil disposed inside the housing, a fan disposed inside the housing and in proximity to the coil, a temperature sensor disposed inside the housing and in proximity to the coil, a wireless charging circuit having the coil and configured to transmit power wirelessly to an external device via the coil, and a control circuit electrically connected to the fan, the temperature sensor, and the wireless charging circuit. The control circuit may be configured to receive a signal from the external device, receive data related to a temperature of the coil from the temperature sensor, and control the fan at least partially on the basis of at least one of the signal and the data.

What is claimed is: 
     
       1. An electronic device comprising:
 a housing including an upper cover and a lower cover; 
 a bracket disposed between the upper cover and the lower cover; 
 a wireless charging coil positioned between the bracket and the upper cover; 
 a heat radiation member disposed between the wireless charging coil and the bracket; 
 an air circulation member disposed under the bracket; 
 
       a printed board assembly (PBA) disposed under the air circulation member; and 
       a shield member disposed between the wireless charging coil and the heat radiation member,
 wherein the PBA includes a control circuit electronically connected to the wireless charging coil and the air circulation member, and 
 wherein the control circuit is configured to control the air circulation member to generate air flow. 
 
     
     
       2. The electronic device of  claim 1 , wherein the control circuit is further configured to:
 receive, from an external device, a signal for controlling the electronic device; and 
 control an operation of the electronic device based on the received signal. 
 
     
     
       3. The electronic device of  claim 2 , wherein the control circuit is further configured to control a rotation speed of the air circulation member based on the received signal. 
     
     
       4. The electronic device of  claim 2 , wherein the control circuit is further configured to, based on the received signal, control the air circulation member to start or stop an operation of the air circulation member. 
     
     
       5. The electronic device of  claim 1 , wherein the upper cover of the housing comprises at least one rubber pad. 
     
     
       6. The electronic device of  claim 5 , wherein the at least one rubber pad comprises a pad shape on which an external device is placeable. 
     
     
       7. The electronic device of  claim 1 , wherein the bracket includes one or more duct structures for air flow. 
     
     
       8. The electronic device of  claim 1 , wherein the lower cover of the housing includes one or more holes for emitting air inside the housing. 
     
     
       9. The electronic device of  claim 8 ,
 wherein the one or more holes include a first hole and a second hole, 
 wherein the first hole is disposed at one side of the lower cover for air inflow, and 
 wherein the second hole is disposed at another side of the lower cover opposite to the one side of the lower cover for emitting the air. 
 
     
     
       10. The electronic device of  claim 1 , further comprising:
 a temperature sensor disposed in the housing, 
 wherein the control circuit is further configured to control the air circulation member based on a temperature inside the electronic device sensed by the temperature sensor. 
 
     
     
       11. The electronic device of  claim 1 , wherein the air circulation member comprises a fan. 
     
     
       12. The electronic device of  claim 1 ,
 wherein the wireless charging coil and the air circulation member are disposed in parallel to each other with a first gap there between, 
 wherein the PBA and the air circulation member are disposed in parallel to each other with a second gap there between, and 
 wherein the first gap and the second gap provide a passage through for air circulation. 
 
     
     
       13. The electronic device of  claim 1 ,
 wherein the wireless charging coil comprises a charging coil member, and 
 wherein the charging coil member includes a heat radiation member and a charging coil. 
 
     
     
       14. The electronic device of  claim 13 , wherein the charging coil member is disposed on the bracket. 
     
     
       15. A wireless charging pad device comprising:
 a housing including an upper cover and a lower cover, the upper cover having a surface on which an external device to be charged can be placed; 
 a bracket disposed between the upper cover and the lower cover; 
 a wireless charging coil disposed between the bracket and the upper cover; 
 a heat radiation member disposed between the wireless charging coil and the bracket and configured to radiate heat generated from the wireless charging coil; 
 a printed board assembly (PBA) disposed between the bracket and the lower cover and configured to control the wireless charging coil to wirelessly transmit power to the external device placed on the upper cover; 
 an air circulation member configured to generate air flow inside the housing; and 
 a shield member disposed between the wireless charging coil and the heat radiation member. 
 
     
     
       16. The wireless charging pad device of  claim 15 ,
 wherein the air circulation member comprises a fan, and 
 wherein the PBA further comprises a control circuit configured to control a rotation speed of the fan. 
 
     
     
       17. The wireless charging pad device of  claim 16 , wherein the control circuit is configured to, based on a received signal, control start or stop operations of the fan. 
     
     
       18. The wireless charging pad device of  claim 15 , wherein the upper cover of the housing comprises at least one rubber pad on which the external device is placeable. 
     
     
       19. The wireless charging pad device of  claim 15 , wherein the housing includes a plurality of vent holes for emitting heat inside the housing. 
     
     
       20. The wireless charging pad device of  claim 15 , further comprising:
 a temperature sensor disposed in the housing for sensing a temperature of the wireless charging pad device. 
 
     
     
       21. The wireless charging pad device of  claim 15 , wherein the air circulation member is further configured to generate the air flow between the heat radiation member and the PBA.